PRE-AWARD: You can challenge the terms of the proposal any time prior to the contract award. POST AWARD: A post-award protest must be filed WITHIN TEN DAYS of notification of the award.
AGENCY: You can file a protest with the awarding agency. GAO: This is usually the best place to file, but has a better chance of success with a Bid Protest Attorney COURT OF FEDERAL CLAIMS PROTEST: The highest authority.